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Ricerche sulla biologia fiorale e di fruttificazione del noce (Juglans regia, L.). 3) Rilievi biometrici e chimici sui frutti durante il loro accrescimento

A. Ramina
Rivista di ortoflorofrutticoltura italiana
Vol. 54, No. 3 (MAGGIO - GIUGNO 1970), pp. 293-300
Stable URL: http://www.jstor.org/stable/42877654
Page Count: 8
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Ricerche sulla biologia fiorale e di fruttificazione del noce (Juglans regia, L.). 3) Rilievi biometrici e chimici sui frutti durante il loro accrescimento
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Abstract

Researches carried out in 1968 and 1969 on twelve-year-old walnut trees have shown that, like the other stone fruits, walnut fruits exibit a double sigmoid growth curve. The rate of growth decreases during the pit-hardening, i.e. the date when the tip of the pit begins to harden, corresponds to the date at wich the fruits enter the period of slow growth. During this period sensible modifications begin in the chemical composition of the fruits: there is a continuous decrease of the moisture and a steady increase of ash potassium and nitrogen.

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